chore(deps): update grafana/grafana docker tag to v12.3.0 (#552)

This PR contains the following updates:

| Package | Update | Change | OpenSSF |
|---|---|---|---|
| [grafana/grafana](https://redirect.github.com/grafana/grafana) | minor
| `12.2.1-ubuntu` -> `12.3.0-ubuntu` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/grafana/grafana/badge)](https://securityscorecards.dev/viewer/?uri=github.com/grafana/grafana)
|

---

### Release Notes

<details>
<summary>grafana/grafana (grafana/grafana)</summary>

###
[`v12.3.0`](https://redirect.github.com/grafana/grafana/compare/v12.2.2...v12.3.0)

###
[`v12.2.2`](https://redirect.github.com/grafana/grafana/compare/v12.2.1...v12.2.2)

[Compare
Source](https://redirect.github.com/grafana/grafana/compare/v12.2.1...v12.2.2)

</details>

---

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docker-compose.yml

@@ -81,7 +81,7 @@ services:
       timeout: 5s
       retries: 3
   grafana:
-    image: "grafana/grafana:12.2.1-ubuntu@sha256:797530c642f7b41ba7848c44cfda5e361ef1f3391a98bed1e5d448c472b6826a"
+    image: "grafana/grafana:12.3.0-ubuntu@sha256:cee936306135e1925ab21dffa16f8a411535d16ab086bef2309339a8e74d62df"
     ports:
       - "127.0.0.1:3000:3000"
     volumes: